Fix Excel Add-in Cannot Connect to Catalog After Update Error
Question details
The user needs to resolve an error preventing a third-party Excel add-in from loading due to a catalog connection failure after a software update.
- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Attempting to launch and use the Refinitiv Excel add-in after installing a recent Microsoft Office update.
- Observed behavior
- The add-in fails to load and displays the error message: 'This add-in cannot be loaded because no connection to the catalog could be established,' even after reinstalling both the add-in and Office.
Verify whether your internet connection is stable and check if the catalog connection error affects all installed Office add-ins or just one specific application like Refinitiv.
Roll Back the Recent Microsoft Office Update
Since the connection error began immediately after an Office update, reverting to the previous functional version is the most reliable workaround until a bug fix is released.
Software updates can sometimes introduce bugs that disrupt the network connectivity components required by third-party add-ins. Reverting the update restores the environment where the add-in previously functioned.
Open Excel, click on 'File', select 'Account', click the 'Update Options' drop-down menu, and select 'Disable Updates' to prevent Office from immediately reinstalling the problematic version.
Look up the build number of the previous Microsoft Office version released before your current update. You will need this build number for the rollback command.
Open the Command Prompt as an Administrator and execute the Office Deployment Tool rollback command targeting the specific previous build number you identified.
Verify Firewall and Proxy Access
Strict firewall rules or proxy configurations might be actively blocking the add-in from establishing a secure connection to its required external catalog server.
Contact the Add-in Developer Support
If the issue only affects a single third-party add-in, the developer may have a specific hotfix, updated installer, or documented workaround for the new Office environment.
Try WPS Office for a Stable and Compatible Spreadsheet Experience
If automatic Microsoft Office updates constantly disrupt your workflow or cause frustrating add-in errors, consider switching to WPS Office. It provides a lightweight, highly stable, and deeply compatible alternative for managing complex spreadsheet tasks without forced disruptive updates.
- 1. Download the Installer: Visit the official WPS Office website and click 'Download WPS Office Free' to get the lightweight installation file.
- 2. Install WPS Office: Run the downloaded installer and follow the simple on-screen instructions to complete the setup on your device.
- 3. Open Your Spreadsheets: Launch WPS Spreadsheet and seamlessly open your existing .xlsx files to resume your work with high stability.
Frequently Asked Questions
Why does my Excel add-in say it cannot connect to the catalog?
This error typically occurs when the add-in is blocked by a system firewall, restricted by a proxy server configuration, or when a recent Microsoft Office update breaks the underlying network connectivity components the add-in relies on.
Will reinstalling the Excel add-in fix the catalog connection error?
Not always. If the root cause is a bug introduced in a recent Office update or an active firewall block, reinstalling the add-in or the Office suite itself will usually not resolve the connection failure.
How do I stop Microsoft Office from automatically updating and breaking my add-ins?
You can turn off automatic updates by opening Excel, navigating to File > Account, clicking on the Update Options button, and selecting 'Disable Updates' from the dropdown menu.
Does this catalog connection issue affect all Excel add-ins?
Usually, no. It generally depends on how a specific add-in connects to its external servers. Some updates might break network-heavy add-ins like Refinitiv while leaving simpler, offline add-ins completely functional.
